package indi.qing.common;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTCreator;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.DecodedJWT;

import java.util.Calendar;
import java.util.Map;

public class JWTUtils {
    private static final String SIGN = "J!(DIHF<39ER?23IFF!IHIvhW%ew65J^bbj*";

    /**
     * 生成token header.payload.sign
     */
    public static String getToken(Map<String, String> map){
        Calendar instance = Calendar.getInstance();
        instance.add(Calendar.DATE,30);

        //创建jwt build
        JWTCreator.Builder builder = JWT.create();

        //payload
        map.forEach((k,v)->{
            builder.withClaim(k,v);
        });

        String token = builder.withExpiresAt(instance.getTime()) //指定令牌过期时间
                                .sign(Algorithm.HMAC256(SIGN)); //sign

        return token;
    }

    /**
     * 验证token合法性
     */
    public static DecodedJWT verify(String token){
        return JWT.require(Algorithm.HMAC256(SIGN)).build().verify(token);
    }
}










